19984370

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4021}}^1$

素因数の和:4106

約数の個数: 32

約数和(自身を含む): 41700096

約数和(自身を除く): 21715726

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 71, 142, 355, 497, 710, 994, 2485, 4021, 4970, 8042, 20105, 28147, 40210, 56294, 140735, 281470, 285491, 570982, 1427455, 1998437, 2854910, 3996874, 9992185, 19984370]

約数ペア:

[(1, 19984370), (2, 9992185), (5, 3996874), (7, 2854910), (10, 1998437), (14, 1427455), (35, 570982), (70, 285491), (71, 281470), (142, 140735), (355, 56294), (497, 40210), (710, 28147), (994, 20105), (2485, 8042), (4021, 4970)]